Answer:

Step-by-step explanation:
The story tells us that Boa drove from the Dead Sea up to Jerusalem. With the data provided, we can assume a linear relationship between altitude and the number of hours. We are given two key data: one point and the rate of change (or slope).
We can easily find the equation of a line with slope m passing through a point (a,b) by using the formula

In this case, y is the altitude above sea level, and x is the number of hours of driving
The value of m is 740 meters/hour and the known point is x=1.5 hours, y=710 meters. Using these values



Point C, since pi=around 3.14
Hope that helps :)
I just plugged both equations into my calculator and found where they intersect. But you can do the same on paper by manually finding that intersection in the graph which should be (2,4)
The value goes down whats the question
Answer:
dy/dx = -1 /√(1 - x^2).
Step-by-step explanation:
y = arccos x.
So x = cos y
dx / dy = - sin y
dy / dx = -1 / sin y
But sin y = √( 1 - cos^2 y)
But cos y = x , so cos^2y = x^2
Therefore
dy/dx = -1 / √(1 - x^2).